Optimizing for MTBF - 2023.2 English

UltraFast Design Methodology Guide for FPGAs and SoCs (UG949)

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2023.2 English

The total MTBF of a design is a function of:

  • Synchronizer MTBF
  • Device failure in time (FIT) rate due to single-event upsets (SEUs)
Note: The device FIT rate due to SEUs largely depends on process and device size.

The synchronizer MTBF is design dependent and varies with the following:

  • Number of asynchronous CDC points
  • Number of synchronizer stages at each crossing point
  • Frequency of the destination FF
  • Toggle rate of the source